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What animals and plants became extinct during the Jurassic era?
Wiki User
∙ 10y ago
First, please forgive me the correction, but the Jurassic was not an era, but a geologic period of the Mesozoic era.
The Early Jurassic suffered a major extinction in the Triassic- Jurassic boundary.
Many archosaur species went extinct, as well as most of amphibia (except small size specimen). In the sea, all conodonts disappeared from fossil register.
Although dinosaurs, pterosaurs and ichthyosaurs were already present during the Triassic, this extintion gave the way to the reptilian gigantism of the Jurassic and the Cretaceous periods, along with bony fish gigantism, such as the largest know fish, the Leedsichthys.
The Jurassic was not a very peaceful period; besides the above major extintion, there were, at least, two other less serious - but nevertheles significative - extintions.
The supercontinent Pangea, the last supercontinent in the geologic history of our planet, began to broke apart, with intense vulcanism and earthquakes.
Earthquakes, even with magnitude 9 or above in the Richter scale, were not as dangerous as today, because there were no buildings, and they could cause regional landslides or, in the worst scenario, non-global topographic alterations.
So, during the Toarcian stage extintion, the sea fauna was hit more severely than the terrestrial fauna, with the total extintion of Ammonites, a long living cephalopod since the Devonian.
The Tithonian extintion was less severe, but the Atlantic Ocean was beeing formed with the tectonic plates mouvement and vulcanism, and the waters of the new ocean became anoxic, with the loss of marine biodversity.
About the flora in the Jurassic, it was dominated by conifers and, in a less extend, the gymnosperms. So, about the flora, no severe extintion occured.
Coralline algae, very important to coral reefs ecology, appeared for the first time.
Ferns, of course, kept abundant but the advent of flowers had to wait for the Cretaceous...
Wiki User
∙ 10y ago
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∙ 15y agotrees like cypresses, pines,cycads, and redwoods
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What marine mammals are extinct?
There are some whales that are supposed to be extinct. But some "extinct" animals have been found in deeper waters. There are also ancient marine mamels during the dinosour periods.
What evolved during the Jurassic or Cretaceous periods?
Dinosaurs.
Can earthquakes cause extinction?
yes of course it can because we in the world have lots of animals and if they die during an earthquake and they have low population they may become extinct.
What meat-eaters lived during the Jurassic?
The Allosaurus was the largest and the Compsognathus was the smallest of the meat-eating dinosaurs that lived during the Jurassic Period. See the related link below for more information:
What was the precipitation like during the Jurassic period?
awesome it rained mad hard
Was there and ice age happening during the Jurassic Period?
The ice age began at the end of the Jurassic period, a theory of why the dinosaurs became extinct. <33
When did the megatherium live?
the megatherium went extinct about 8,000 years ago
When was the allosaurus born and extinct?
During the Jurassic period.
What happened to many land and sea animals during Paleozoic era?
Many of the animals began to die off and became extinct.
How long ago did dinosaurs live in the jurasic peirod?
Dinosaurs lived in the Jurassic Period over 145 to 200 million years ago. Dinosaurs became extinct during the Triassic period.
What was the dominant land animal during the Jurassic and cretaceous period?
The dinosaurs were the dominant land animals during the Jurassic and Cretaceous periods, rising to dominance during the late Triassic.
How did the hyenadon become extinct?
The hyenadon became extinct during the start of the Oligocene. There was a mas extinction event that was called Grande Coupure and causes temperatures to decline and killed many species of animals.
What are important Jurassic period events?
cute dinos went bye bye (:CommentDinosaurs went extinct on the C-T (Cretaceous/Tertiary) boundary. Not during the Jurassic Period.
How did pteranodon become extinct?
A pteranodon is a pterosaur, or a flying dinosaur. During the fall of the dinosaurs, all dinosaurs became extinct, including the pterosaurs.
Organisms that diversified during the Jurassic period?
Several organisms diversified during the Jurassic period. Crocodiles became larger and more diverse. Dinosaurs and birds diversified and thrived. Of all the organisms in the Jurassic Period, plants diversified the most.
Witch group of giant animals once lived during the triassic and Jurassic peridos?
Dinosaurs
Which group of giants once lived during the triassic and Jurassic periods?
Dinosaurs were the giant animals that once lived during the Triassic and Jurassic periods. I hope this answer helped you even though it was a fairly simple question!
